The Harris County Sheriff said the investigation was ongoing and begged citizens to "put the guns down."

Gonzalez said that authorities had identified a second suspect, but were still verifying some information. He thanked Shaquille O'Neal, DeAndre Hopkins, and activist Shaun King for helping "raise awareness."

"We know that there's an important discussion that does need to take place about race," he said. "We also need to talk about gun violence."

Before taking questions, Gonzalez pleaded with the public to "put the guns down."

"We do not need any senseless killings," he said. "We don't want any more families to suffer like this family is suffering."

Barnes' funeral is set for Tuesday, along with a community rally. Mourners will release purple balloons in her honor.